There have been some censored versions of Ga-rei Zero aired by more craven stations, but I think we can put the matter to rest with the above captures; it seems unlikely things can get much more extreme than this version, aired by AT-X. Just about everything which can be stabbed or cut off looks to be stabbed or cut off.

There is no ero to the show (sort of), but flying limb blood spurting action surely more than makes up for it?